We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Thread ini telah diarkib. Sila tanya soalan baru jika anda perlu bantuan.

I have downloaded the new Firefox 4 on Mac OS X, getting message that I cannot use this version of Mac OS X and cannot get back open old 3.6.10 format either since it has been replaced. How can I get this to work or replace previous application?

  • 1 balasan
  • 7 ada masalah ini
  • 9 paparan
  • Balasan terakhir oleh cor-el

theobaldart
theobaldart
more options

Downloaded Firefox 4 to replace 3.6.10 but cannot open. Message says application will not work with Mac OS X. Can I return to old version or is something incompatible in new Firefox 4?

Downloaded Firefox 4 to replace 3.6.10 but cannot open. Message says application will not work with Mac OS X. Can I return to old version or is something incompatible in new Firefox 4?

All Replies (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Firefox 4 requires at least OS X 10.5 and an Intel Mac.

For Mac OS X 10.4.11 or Mac OS X 10.5.8 you can look at:

Firefox 3.6.x can be found here: